Department of Urology, Kyoto Prefectural University of Medicine
Prostatic cancer, Early stage, Ttransrectal sonography, Mass screening program
Mass screening program for prostatic diseases using transrectal sonography (TRS) for the primary study
was performed on 6,529 males fron January, 1975 to October, 1988. Among 40 cases of prostatic cancer
detected in this mass screening, 22 cases (55.0%) were finally diagnosed as prostatic cancer in Stage B.
Sixteen cases were ultrasonically diagnosed as PC( I ) , 4 cases as PC(II) , and the remaining 2 cases could
not be pointed out by TRS.
These results showed that an importance to diagnose as PC( I ) by TRS in the detection of cases in the
early stages, which required a well-trained reading ability for TRS images.